Find the Sum of the Sequence $$\sum _ { k = 3 } ^ { 5 } \left( k ^ { 2 } - 9 \right)$$

question 227

Multiple Choice

Find the sum of the sequence.
- $$\sum _ { k = 3 } ^ { 5 } \left( k ^ { 2 } - 9 \right)$$

• A) -15
• B) 23
• C) 10
• D) -3

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Definitions:

Emotions

Feelings that result from one's circumstances, mood, or relationships with others.

Irrational

Lacking the ability to reason or apply logical thought, often leading to actions or beliefs that lack sense or sound judgment.

Unintelligent

Lacking intelligence, understanding, or insight; displaying a lack of smart or sensible thinking.

Bad Faith

A concept in existentialist philosophy referring to self-deception or lying to oneself, often to avoid facing uncomfortable truths.